... board, insulating paper board), which is mainly applied to produce oil-immersed transformer as insulation material.Specifications:Item No: H4, H41Thickness (mm): 1 ... -1000KVPackage: palletUsage:As insulation material, it is widely used in transformer, reactor,capacitor, mutual inductor, etc. Our Unique Advantages: High ... within 24 hours and make a satisfactory solution. High density transformer board